
PTM 2-40
B070/B071
2.5.4 DRUM CHARGE
Overview
This copier uses a double corona wire Scorotron system to charge the drum. Because
of the high speed of this copier, two corona wires are needed to give a sufficient,
uniform negative charge to the drum surface. The stainless steel grid plate makes the
corona charge uniform and controls the amount of negative charge on the drum
surface by applying a negative voltage to the grid.
The CBG (Charge, Bias, Grid) power pack [A] supplies a constant corona current to
the corona wires, –1600
µ
A for Photo mode and –1400
µ
A for all other modes (Text,
Text/Photo, Pale, Generation Copy).
The voltage to the grid plate is automatically controlled to maintain the correct image
density in response to changes in drum potential caused by dirt on the grid plate and
charge corona casing. This is described in Process Control section in more detail.
B070D203.WMF
[A]
Содержание e-studio 1050
Страница 1: ...TECHNICAL TRAINING PROGRAM PRE STUDY MANUAL e STUDIO900 1050 Toshiba America Business Solutions ...
Страница 6: ......
Страница 12: ...SECTION 1 OVERALL INFORMATION ...
Страница 13: ......
Страница 24: ...SECTION 2 DETAILED DESCRIPTIONS ...
Страница 25: ......
Страница 44: ...PTM 2 19 B070 B071 ...
Страница 115: ...SECTION 3 SERVICE TABLES ...
Страница 116: ......
Страница 123: ...SECTION 4 INSTALLATION ...
Страница 124: ......
Страница 132: ...SECTION 5 LARGE CAPACITY TRAY ...
Страница 133: ......
Страница 148: ...SECTION 6 SR860 BOOKLET FINISHER ...
Страница 149: ......
Страница 174: ...SECTION 7 3 000 SHEET FINISHER MJ 1026 ...
Страница 175: ......
Страница 203: ...SECTION 8 COVER INTERPOSER TRAY MJ 7002 ...
Страница 204: ......
Страница 213: ...SECTION 9 MULTI BYPASS TRAY MY 1024 ...
Страница 214: ......